Machine for coating channels in shoe parts



Jan. 12 1943.

J. R. J. IOANNILLI 2,307,793 MACHINE FOR COATING CHANNELS IN SHOE! PARTSFiled Nov. 22, 1940 2 Sheets-Sheet 1 //v VE/VT a. as

Jam 3- J. R. .1. lOANNlLLl 0 MACHINE FOR COATING CHANNELS IN SHOE PARTSFiled Nov. 22, 1940 2 Sheets-Sheet 2 Patented Jan. 12, 1943 orricsMACHINE FOB. COATING CHANNELS IN SHOE PARTS Joseph R. J. Ioannil'li,Hamilton, Mass, assignor to United Shoe Machinery Corporation,Flemington, N. J., a corporation of New Jersey Application November 22,1940, Serial No. 366,645

11 Claims.

This invention relates to the coating of adjacent angularly relatedsurfaces of pieces of work and is herein illustrated as embodied in amachine designed to apply coating material for the attachment of a stripof reinforcing canvas to the inside of the rib of an insole and to aportion of the adjacent surface or mid-portion.

For many years insoles for welted shoes have been prepared by firstforming adjacent channels around the margin of the insole, turning upand sticking together the lips provided thereby to make a rib, and inthen attaching reinforcing canvas, such as Gem duck, to the inside ofthe rib and to the whole of the intermediate surface or mid-portion.Various coating materials or cements have been employed for this purposeand, according to one system, pressuresensitive cements are applied to aface of the canvas and the corresponding surface of the insole. Thecanvas is then applied and formed in or pushed into the corner betweenthe midportion and the rib, after which the portion of the canvas whichprojects beyond the top of the rib must be trimmed off. More recently ithas been proposed to avoid the use of reinforcing material which extendsacross the whole mid-- portion space between the ribs and to apply tothe insole, in place of this, strips of fabric which are flush with thetop of the rib and extend across the inside channel and an adjacentportion of the middle of the insole far enough to avoid any danger thatthe inner edge of the fabric strip will be caught by the needle of theinseam sewing machine. This avoids the trimming of the canvas at the topof the rib and saves material, because the reinforcement of themid-portion of the insole is usually unnecessary, it having been foundthat this portion is not commonly stretched or distorted by any of thestrains which are ordinarily applied to it during lasting or othershoemaking processes. The application of a coating of adhesive to theinsole in the desired location has been efiected by means of spray gunsto which the insoles are either manually or mechanically presented, butthis involves difiiculties in controlling the extent of the area coatedand the quantity which is applied.

Accordingly, it is an important object of the invention to provide animproved machine by means of which coating material may be expeditiouslyand accurately applied to the angularly related surfaces underconsideration.

To this end, and in accordance with features of the invention, thecoating material is flowed upon the work through a nozzle the outletopening of which is subdivided into sections and is provided withseparate control means for regulating the flow of material through saidsections. As herein illustrated, the nozzle is provided with a rotaryapplying member which coats the rib of the insole and which is alsoutilized to press it against the lateral face of a work-feeding roll.This applying member is provided with helical flutes which help tospread the coating material across the whole height of the rib.

These and other features of the invention will best be understood from aconsideration of the following specification taken in connection withthe accompanying drawings, in which Fig. 1 is a side elevation of thehead of the machine with a cover removed to show those Fig. 5 is avertical section through the nozzle on the line V-V of Fig. 4 butshowing the cover of the nozzle in place;

Fig. 6 is a vertical section on the line VI-VI of Fig. 3 to show ayielding work-supporting plate; and

Fig. 7 is a horizontal section on the line VIIVII of Fig. 3 takenthrough the nozzle and looking down upon the feed wheels and the workguides.

The machine under consideration is particularly intended for use in thetreatment of insoles I (Fig. 3) having an upstanding rib R formed bychanneling the insole and turning up and sticking together the two lipsthus separated from the body of the Work. Themargin outside of the ribis termed a feather F. For the purpose described above, the machine isarranged to apply a coating material, such as latex, by means of anozzle 8 supplied through valves [6, to a portion of the fiatmid-portion 12 of the insole and also to the channel It from which oneof the lips was removed and to the upstanding face of the inside of therib R. During thi coating operation, successive portions of the insoleare presented to the nozzle by means of co-acting feed Wheels l6 and I8(Fig. 7) which grip the opposite faces of the feather F. The feedwheelI6 is carried on a shaft 29 which is journaled in an arm 22 secured tothe outside of a hollow frame 24. The co-acting feed wheel I8 is carriedon a shaft 26 which is journaled in an arm 28 tiltably mounted uponbrackets 30 (Fig. 1), forming part of the frame, which are provided withpivot screws 32. These shafts 20 and 2B are interconnected by gears 34,and the upper shaft 20 is gear-connected at 36 to a drive shaft 38having fast and loose pulleys M). This tiltable arm 23 has an inwardextension 48, and the downward movement of the arm 28 is limited bycontact of the extension with a stop screw 56 carried by a bracket 52.hand, it is desired to grip a piece of work, then the arm 28 is tiltedclockwise by depressing a treadle attached to a treadle rod 54?. Thistrea' dle rod is connected to one of two arms 56' on a shaft 58, andfrom the other of these armsthere extends upwardly an operating rod 69which is.

connected at its upper end to an arm 62 secured by a slip clutch 63 to avalve-operatin shaft 65. On the rod 66 there is a freely slidable sleeve66 which rests upon a spring 68 co-acting with a washer which bears uponthe upper side of a forkedend of the extension 48. Attached to the rod69 is a collar I9 which is held thereon by a set screw and which has adepending portion I2 with an inward extension I4. When the treadle isdepressed, the collar I on the rod 60 will be pulled down until itcontacts with the upper end of the sleeve 66, and then, acting throughthe spring 63, it will raise the arm 28 carrying the lower feed wheelI8. As soon as the sleeve 68 has moved far enough down, it will becaught and held by the engagement of a latch plate 16 (Fig. 2) with anenlargement I8 upon the sleeve. The latch plate is carried upon ahanging arm 80 pivotally mounted upon a bracket 82 and pressed towardthe sleeve 65 by a spring 84. Thus, as long as the operation on aninsole is continued, the engagement of the feed rolls with the work ismaintained by this latchin mechanism and the operator will control theflow of latex through the nozzle 8 by holding down the treadle andkeeping open the valves I0 by means of a connection to be described. Asthe end of the rib on the insole is approached, it is desirable to shutoff the flow of latex before the feed is released so that any surplus inthe nozzle will be used up. This is accomplished by releasing u thetreadle, thus permittingupward movement of the treadle rod by a spring(not shown), without disturbing the feed mechanism until the extensionI4 contacts with a cam surface 86 on the lower end of the hanging arm80. This will push aside the latch plate Iii, allowing the spring 68 toexpand and the lower feed roll I8 to drop. The latch plate I6 may beadjusted heightwise of the arm 88 (Fig. 2) by a screw and slotconnection. It will also be noted that the arrangement just describedpermits the flow of latex to be started through the valves ID justbefore the feed wheels I6 and I8 grip the work, thus insuring a coatingof the desired thickness from the very start of the operation.

The nozzle 8 is made up of two plate-like parts which will bearbitrarily named a body 92 (Figs. 4 and and a cover 99. The body 92 hasribs 94, 9t, 97 and 98 and the cover 90 is secured by a screw I60. Therib 98 serves as a partition to divide the outlet opening of the nozzleinto two sections. The part to the left of rib 96 delivers coatingmaterial to the insole surface I2'.- Between the ribs 91 and 98 thenozzle halves are When, on the other bulged as at It (Fig. 7) tosurround the upper portion of a fluted spindle I04 which covers theother section of the outlet opening. The lower portion of this spindleis provided with helical flutes and is arranged to rest against and coatthe inner face of the rib R, and its lower end is seated in the channelI which will also be coated. Coating material is supplied to the spindleI04 through that part of the nozzle opening at the right of the rib 96.This spindle is journaled for free rotation in a carrier H0 and at itsupper end is provided with ball bearings I 96. The carrier III] isadjustable heightwise upon a support H2 to which it is joined by adovetail connection and is held in place thereon by a set screw lid. Thesupport II2 is tiltable upon pins H6 extending inwardly from parallelbrackets H8 and I20 which are carried upon the hollow frame 24. Thesupport H2 has an upwardly extending arm I 22 connected to a rod I28.This rod passes through a bracket I28 on the frame and is spring-pressedto the left by a spring I30 to a variable limit determined by nuts I24(Fig. 1) so as normally to hold the fluted spindle I94 firmly againstthe inner face of the rib R. Since there may be variations in the depthof the channel I4 in different pieces of work, the nozzle 8 is yieldableheightwise and, to this end, it has an outward projection I32 on whichis secured a rod I34 slidable in the upper portion of the carrier I I8and in an extension I99 thereof. The rod I36 is yieldably urgeddownwardly to hold the nozzle in contact with the surface I2 of themid-portion of the insole by a spring I36 surrounding this rod andbearing against a guide arm I38. This guide arm bears against thecarrier Ill! and prevents twisting of the nozzle sufficient to cause itto bind on the fluted spindle I84.

It will be seen from Fig. 5 that the nozzle body 82 extends lower thanthe cover plate 99 and that the lower edge of this body 92 is serratedat I49 so as better to spread the coating material upon the surface I?of the insole.

The coating material to be applied by the nozzle is supplied to it bygravity through a flexible hose I42 leading to Valves l3 by way of achamber I44 (Fig. 3) in a valve casing Hit which is supported in properrelation to the nozzle s by being clamped by arms Hi8 extendingoutwardly from the carrier HI]. From the chamber I44, the coatingmaterial flows downwardly through valve tubes I59, I5I the conical lowerends of which are received in recesses I52 (Figs. 4 and 5) formed at theupper edges of the nozzle memhere and 82 and consequently there is nointerference between the valve tubes and the nozzle as the latter ridesupon the work. The outflow of coating material from the tubes Hie, I5Iis controlled by valve rods Itid which are pointed at their lower endsto cooperate with the conical ends of the tubes to close them when thetreadle is released. These valve rods are slidably mounted in the valvecasing I46 and, after passing through stufling boxes I56, they cooperatewith adjustable stop screws I58 in the upper portion of the casing I45.These stop screws limit the opening movement of the valve rods andpermit separate adjustment of the quantities of coating material whichare delivered to the two sections of the nozzle lying on opposite sidesof the partition rib 95. This makesit possible for the oper ator todetermine separately the quantity of material which is applied to thechannel Id and the associated rib R, on the one hand, as compared withthe amount which is applied to the surface I2 of the insole, on theother hand These valve rods I54 are urged downwardly by springs I66bear-ingagainst collars I62 which are secured to the rods. They areshown in Fig. 3 in their upper positions to which they have been liftedby a forked arm I64 the ends of which underlie a'pin extending across asort of double-forked whiftletree I66. This whifiletree has roundedsurfaces underlying the collars I62 and when the'arm I64 is turnedcounterclockwise, an equalized lifting force is applied to the rods. Thearm I64 is mounted on one end of a pivot I68 extending through anintermediate portion of the member which forms the valve casing I46, andfastened to the other end of the pivot'is a long arm I78 which overliesat its right end (Fig. 3) an arm I12 extending forwardly from thevalve-operating shaft 64. extending arm I12 is limited by a stop I74which hangs from a cross-rod I76 traversing the'two brackets II8 andI20. When the treadle is depressed, the arm H2 is raised to open thevalves 7 III.

The insole I rests upon a table I89 which is mounted for heightwiseadjustment at the outer end of an arm I82 (Fig. 3) pivoted at I84 to thearm 28 carrying the lower feed roll I8. The table is clamped to this armI82 by means of a screw I86. The arm I82 is provided with ananti-friction work-supporting roll I90 which directly underlies thechanneled portion IA of the work, and the arm I82 is urged upwardly by aspring I92 to a limiting position determined by a stop screw I84.

The work is guided through the machine partly by bringing the edge ofthe insole against a s plate I96 (Fig. '7) and partly by the cooperationof the rib B with the rounded surface I98 upon another gage which isadjustably mounted upon the arm 22. The gage plate I96 is attached to aplate IS'I which is carried upon the lower arm 28. It will be seen fromFig. 3 that the end face of the feed roll I6 is made concave, asindicated at 290, so as to reduce the friction between this roll and theside of the rib. At the same time, the very lowest portion of the rib islightly gripped, by the action of spring I36 (Fig. 1), between the lowerend of the fluted roll I64 and the lower edge of the feed roll I6.Inasmuch as the rib R is quite flexible and does not always standdirectly upright, there is some danger that it will ride-under the gageI98 and the feed roll I6, and to avoid this tendency, a yieldablymounted support 262 is positioned in a recess of the table I86 directlybelow the curved edge I98 of the rib gage. This support 202, guided forvertical movement in an upwardly projecting portion 204 (Figs. 3 and 6)of the arm I82 by means of pins 206 and 208, is pressed up against thework by a spring 2 I II.

In the use of the machine, successive insoles will be presented to themachine, each with the toe end toward the operator, and the free end ofthe rib R, adjacent to the heel end of the insole, will be insertedbetween the fluted roll I04 and the upper feed roll I6. The operatorthen, by depressing the treadle, will raise the lower arm 28 to bring upthe supporting members and to grip the feather F of the insole betweenthe feed rolls I6 and I8. The timing of the mechanism is such that thevalves III will be opened before the work is gripped by the feed rolls,thus giving the coating material a chance to flow down into the nozzle 8and into contact with the work just as the latter starts to moveDownward movementof this forwardly along. The work-supporting arm' 28will be latched in its upper-most position, as 'shown' inface 86 at thelower end of the latch arm. 80..

During the progressive movement of the insole past the. nozzle 8, thecoating material will be spread upon'the mid-portion I2 by'the serratededge I40 of the nozzle at the leaving side thereof andthe coatingmaterial will be spread upon the whole heightwise extent of the innersurface ofthe rib R by the fluted spindle I04 as the latter is turned bycontact with the rib.

Havingthus described my invention, what Iv claim as new and desire tosecure by Letters Patent of theiUnited States is:

1. In a machine for coating angularly, related adjacentsurfaces uponpieces of work, a nozzle having outlets along angularly related sides toapply coating material to said angularly related surfaces, said'nozzlebeing provided with a rotary applying-member pivotally supportedwithone portion of its periphery adjacent to and. arranged to receivecoating material from one of said outlets to apply it to one of saidsurfaces as relative movement between the work and the nozzle permitsthe latter to treat the work progressively.

2. In a machine for coating angularly related adjacent surfaces uponpieces of work, a nozzle having an outlet constructed and arranged toapply coating material to one of said surfaces, said nozzle also beingprovided with an opening substantially covered by a fluted, rotatableapplying member positioned thereon to receive coating material throughthe nozzle and having an exposed portion to contact with and to coat theother of the surfaces of a piece of work presented progressivelythereto.

3. In a machine for coating soles having an upstanding rib, a solesupport, an abutment supporting said rib, a rotatable applying member,means for pressing said applying member laterally against the side faceof the rib opposite said abutment, a nozzle having dual outlets one ofwhich coacts with said applying member to suply coating materialthereto, and means for resiliently holding together the other outlet ofsaid nozzle and the surface of a sole resting on said support.

4. In a machine for coating soles having an upstanding rib, a nozzleconstructed and arranged to apply coating material to the surface of thesole and to the side face of the rib thereon, the outlet opening of saidnozzle being divided into sections, valves, normally spring closed, forcontrolling the flow of coating material to the respective sections, andoperator-controlled means for opening said valves.

5. In a machine for coating soles having an upstanding rib, a nozzleconstructed and arranged to apply coating material to the surface of thesole and to the side face of the rib, said nozzle being divided intosections, valves for controlling the flow of coating material to therespective sections, and operator-controlled means for simultaneouslyopening said valves.

6. In a machine for coating soles having an upstanding rib, work-feedingmechanism, means including a nozzle constructed and arranged to applycoating materialto the surface of'thezsoleand'to-the side faceof therib,said nozzle being divided. into sections, spring-closedv valves forcontrolling the flow of coating material to the respective sections, andoperator-controlled means for opening said valves and controlling saidfeeding mechanism to operate'themin timed relation.

7; In a machine for coating soles having an upstanding rib, a nozzleconstructed and arranged to apply coating materialto the surface of thesole and to the side face of the rib thereon, said nozzle being dividedinto sections, means for supplying coating material to said sectionsincluding separate valves therefor, operator-controlled means. foropening said valves, andianadjustable stop controllingthe extent ofopening movement of one of said valves.

8. In a machine for coatingsoles having an upstanding rib, a nozzleconstructed and arranged to apply coating material to the surface of thesole and to the side face of the: rib thereon, said nozzle being dividedinto, sections, means for supplying coatingmaterial to said. sectionsincluding individual valves controllingtheflow of said.

material, springs-tending to close said valves, an adjustable stop foroneof the valves, operatorcontrolled means for opening said valves, andan equalizing device between said means. and said valves.

9. In a machine for coating the channel and one face of the rib of asole, a support for the sole, a feed wheel coacting with the margin ofthe sole outside of the rib, means including a nozzlefor deliveringcoating material to the inside of the rib and provided with a. rotatablemember contacting with the rib to press it against the feed wheel, andmeans for holding said nozzle against the work.

10. In a machine for coating the, channel and one faceof the rib ofasole,,a support for the sole, a feed wheel coacting with themargin ofthe sole outside of the rib, means including a nozzle for deliveringcement to the inside of the rib and provided with a rotatable membercontacting with the rib to grip it against the feed wheel, means forholding said nozzle against thework, and means for moving said nozzletoward the feed wheel to grip the rib.

11. In a machine for coating soles having a rib, a coating member, feedrolls gripping a margin of the sole, a gage coacting with one surface ofthe sole, and a work-supporting member yieldab-ly supported on themachine to coact with another surface of the sole substantially oppositeto the point of contact of the gage'with the sole.

JOSEPH R. J. IOANNILLI.

